guys with Weistec mid/down pipe chime in
thanks
James did. You'll have to contact Weistec and get their o2 sensor spacer.
They initially claimed no CEL with their setup and now it appears they're selling a part to stop it....
Trending Topics
The Best of Mercedes & AMG
That is pretty poor. I'd try by phone, they seem to answer to possible sales promptly. Hope they just overlooked inbox. Please let us know how you make out. Will help my decision in the future.

The spacer fixed it for me.
I remember one morning though, the car threw a CEL and by the end of the day, the CEL disappeared.
Weistec Engineering


